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380740901 = 2931299457
BaseRepresentation
bin10110101100011…
…010010100100101
3222112102122022212
4112230122110211
51234432202101
6101440333205
712302146532
oct2654322445
9875378285
10380740901
11185a11302
12a7614205
1360b5a498
14387cdd89
152365c1bb
hex16b1a525

380740901 has 4 divisors (see below), whose sum is σ = 382040652. Its totient is φ = 379441152.

The previous prime is 380740813. The next prime is 380740907. The reversal of 380740901 is 109047083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218152900 + 162588001 = 14770^2 + 12751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-380740901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380740907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649436 + ... + 650021.

It is an arithmetic number, because the mean of its divisors is an integer number (95510163).

Almost surely, 2380740901 is an apocalyptic number.

It is an amenable number.

380740901 is a deficient number, since it is larger than the sum of its proper divisors (1299751).

380740901 is a wasteful number, since it uses less digits than its factorization.

380740901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299750.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 380740901 is about 19512.5831452425. The cubic root of 380740901 is about 724.7860810013.

Adding to 380740901 its reverse (109047083), we get a palindrome (489787984).

The spelling of 380740901 in words is "three hundred eighty million, seven hundred forty thousand, nine hundred one".

Divisors: 1 293 1299457 380740901